CVE-2026-20614 is a security vulnerability in Apple macOS stemming from a path handling flaw that allows an application to escalate its privileges to root level. The root cause is inadequate validation of file system paths, which can be manipulated by a malicious app to bypass normal security controls and execute code with the highest system privileges. This vulnerability affects multiple macOS branches, including Sequoia, Tahoe, and Sonoma, with fixes released in versions 15.7.4, 26.3, and 14.8.4 respectively. The vulnerability does not require prior authentication or user interaction, increasing its risk profile. Although no exploits have been reported in the wild, the potential impact is significant because gaining root privileges enables an attacker to fully control the system, access sensitive data, install persistent malware, or disrupt system operations. The vulnerability was reserved in November 2025 and published in February 2026, indicating recent discovery and disclosure. The lack of a CVSS score necessitates an independent severity assessment based on the nature of the flaw and its potential impact.

For European organizations, this vulnerability poses a critical risk especially to enterprises and government entities that rely on macOS for daily operations. Successful exploitation would grant attackers unrestricted access to affected systems, compromising confidentiality, integrity, and availability of data and services. This could lead to data breaches, espionage, sabotage, or ransomware deployment. Organizations in sectors such as finance, healthcare, telecommunications, and critical infrastructure are particularly vulnerable due to the sensitive nature of their data and operations. The ability to escalate privileges without authentication or user interaction increases the likelihood of automated or remote exploitation, potentially affecting large numbers of devices. The impact is exacerbated in environments where macOS devices are integrated into broader IT ecosystems without strict segmentation or monitoring.

European organizations should prioritize immediate patching of all macOS devices to the fixed versions: Sequoia 15.7.4, Tahoe 26.3, and Sonoma 14.8.4. Beyond patching, organizations should implement application whitelisting to restrict installation and execution of unauthorized apps, reducing the attack surface. Employ endpoint detection and response (EDR) solutions capable of detecting suspicious privilege escalation behaviors. Network segmentation should be enforced to limit lateral movement from compromised macOS devices. Regular auditing of system logs and privilege use can help identify early signs of exploitation. User education on the risks of installing untrusted applications complements technical controls. For high-security environments, consider deploying macOS security features such as System Integrity Protection (SIP) and secure boot to further harden systems. Incident response plans should be updated to include scenarios involving macOS root privilege escalation.